wotapek



llnrr n starts Parana @rricht BERTI-IA WOTAPEK, CF NEWV YORK, N. Y.,ADMINISTRATRIX OF JOSEPH WVOTAPEK, DECEASED.

EXHAUST-NOZZLE FOR LQCOMOTll/ES.

SPECIFICATION forming part of Letters Patent 1\l'0.310,'768 datedJanuary 13. 1885.

Application filed November 20, 1884.

To all whom it may concern.-

Be it known that J OSEPH \VOTAPEK, de-' ceased, late of the city,county, and State of New York, did during his lifetime invent a certainnew and useful Improvement in Exhaust-Nozzles for Locomotives, 8m, ofwhich the following is a specification.

The improvement hereinafter described, while designed more particularlyfor locomotive service, is also adapted for use with traction-engines,marine engines, &c.

Before the invention of said YVOTAPEK the more usual way of arrangingexhaust-nozzles in locomotives was to place the two exhaust nozzles sideby side in the smoke-box and below the smoke-stack. Under thisarrangement the center lines or longitudinal axes of the nozzles werenot in line with the longitudinal axis of the stack, and in consequenceof this the exhaust-steam would strike one side or the other of thesmoke-stack with the result of reducing its velocity and causing part ofit to be left behind, thus destroying the vacuum in the sinoke-boX-inother words, the utility of the exhaust-steam as a medium for theproduction of the necessary draft was materially impaired. An increasedspeed of exhaust-steam was required in order to overcome this obstacleto the free induction of the steam into the stack, and this was obtainedby considerably contracting the discharge-orifices of the nozzles; butsuch contraction of exhaust-nozzles causes back-pressure in thecylinders, and besides this produces at each stroke of the engine a highvacuum in the smoke-box, which causes a constant tearing up of the fireand an unsteady temperature in the fire-box and results in a great wasteof fuel. It has been essayed to remedy these objections by arranging theexhaust-nozzles concentrically with one another; but such arrangementshave been de fective in that the steam has not been fully availed of toexhaust or carry off with it the gaseous products of combustion.

It was with a View to overcome the difficulties above referred to thatthe said WOTAPEK devised his invention, which may be stated in generalterms to consist in combining, with the smoke-stack, two cencentricexhaust-noz- (No model.)

zles located centrally below the smoke-stack and one above the other,and areceiving-cone surrounded by the upper exhaust-nozzle and locatedin a position to receive the steam from the lower nozzle, together withthe gases drawn along with said steam. The upper nozzle only need havean annular discharge-orifice, said orifice being at or near the upperend of the receiving-cone, which it surrounds; but it is preferred togive both the upper and lower nozzles annular areas, since in thiswaythe acting surface of the steam is still further increased.

The nature of the invention and the manner in which it is or may becarried into effect can best be explained and understood by reference tothe accompanying drawings, in which- Figure 1 is a transverse verticalsection, partly in elevation, of a locomotive smoke-box containing theimprovement. In this figure both exhaust-nozzles have annular areas, andthis is the preferred arrangement. Fig. 2 is a like section of the same,with a modified arrangement of the exhaust-nozzles.

Like reference-letters in the two figures indicate similar parts.

In Fig. 1, D is the locomotive smoke-box. C is the smoke-stack. e arethe live-steam pipes, leading, as usual, from the boiler to thesteanrchests of the two engine-cylinders; and c d are the exhaust-pipes,which lead, as usual, from the cylinders and terminate in theexhaust-nozzles a b. Both of these exhaust-nozzles are annular. They areplaced concentrically one above the other and below and centrally inline with the smoke-stack. The lower nozzle, a, surroundsareceiving-cone, A, and the upper nozzle surrounds a receivingcone, B,through which passes the steam emitted from nozzle (0, together with thegases sucked up with that steam. Under this arrangement theexhaust-steam passes up centrally to the receiving-cone and stack, andcoming equally in contact with the same on all parts of their interiorfaces, and doing its work without loss of velocity or decrease ofvacuum. A more efficient action of the steam is obtained than heretoforewithout undue contraction of the nozzles, consequently backpressure inthe cylinders is considerably reduced, and the vacuum in the smoke-boxis more stable, thus preventing the firefrom being torn up, andmaintaining a steadier temperature in the fire-box and a bettercombustion of the fuel. By giving the two nozzles annular areas thesteam is caused to act more efficiently. Each receiving-cone A Bcommunicates freely with the interior of the smok ebox, as shown, sothat the smoke and gases can pass up through them. Each steam-jet, owingto its annular form, has an outside and an inside sucking-surface, as itmay be called, which sucks up and carries along a greater volume ofgases than would be the case if the jet were tubular. In the latter casea considerable portion of steam toward the middle of the jet escapesthrough the smoke-stack without coming in contact with the gases, whilein the case of an annular jet nearly every particle of steam iscompelled to do its work.

Fig. 2 in nowise differs from Fig. 1, save that the lower nozzle,lettered f, is tubular instead of annular. It is, however, like theannular nozzle a, concentric with the receivingcone B and annularnozzle 1) above.

Having described the improvementand the manner in which the same is ormay be carried into effect, what is claimed herein as new, and of theinvention of the said J OSEPH WOTAPEK,

0 is as follows:

1. The combination, with the smoke-box and the smoke-stack, of the twoexhaust-nozzles placed concentrically one above the other and centrallybelow the smoke-stack, and a receiving-cone surrounded by the uppernozzle, through which cone passes the steam discharged from the lowerexhaust-nozzle, together with the gases drawn along by and with thatsteam, substantially as hereinbefore set forth.

2. The combination of the smoke-box, the smoke-stack, the two annularexhaust-nozzles placed concentrically one above the other and centrallybelow the smokestack, and two receiving-cones communicating with theinterior of the smoke-box and surrounded, the one by the upper and theother by the lower exhaustnozzle, substantially as and for the purposeshereinbefore set forth.

In testimony whereof I, BERTHA W'OTATPEK, administratrix of the estateof thelate J OSEPH WOTAPEK, deceased, have hereunto set my hand this18th day of November, 1884.

BERTHA WOTAPEK.

\Vitnesses:

J AGOB WV. MACK, ADOLPH BARGEBUHR.

